my awesomest math puzzle

(A+B)(B-B)
ARCHIMEDES
BRAMHAGUPTA
DAVIDHILBERT
HIPPOCRATES
INTEGERS
IRRATIONAL
ISAACNEWTON
RATIONAL

it contains all math stuff

Try to find all 9 words on this board.

P U Z I R R A T I O N A L D S
L D V E X V C V N K G M N R C
A ( A + B ) ( B - B ) M E A S
I U R V L C I F J H T G T Q T
F G C H I M K H V U E P A C B
A Q H F E D O K K T U C W K B
X P I C N F H P N G F Y V M L
F X M F W Z W I A G T I Z S E
Q K E C M C Z H L D D J S P Y
E O D W H S M K R B P O Q W M
O H E L B A A D C O E T B R Q
T W S R R W R Y V G F R F P K
F D Q B I S A A C N E W T O N
G O J W L B S C Z E N K L X S
E D S E T A R C O P P I H A Q
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Answer Key for my awesomest math puzzle

X
Y
123456789101112131415
1# # # I R R A T I O N A L # S
2# D # # # # # # # # # # # R #
3# ( A + B ) ( B - B ) # E A #
4# # R V # # # # # # # G T # #
5# # C # I # # # # # E P # # #
6# # H # # D # # # T U # # # #
7# # I # # # H # N G # # # # #
8# # M # # # # I A # # # # # #
9# # E # # # # H L # # # # # #
10# # D # # # M # # B # # # # #
11# # E # # A # # # # E # # # #
12# # S # R # # # # # # R # # #
13# # # B I S A A C N E W T O N
14# # # # # # # # # # # # # # #
15# # S E T A R C O P P I H # #
Word X Y Direction
(A+B)(B-B)  33e
ARCHIMEDES  33s
BRAMHAGUPTA  413ne
DAVIDHILBERT  88se
HIPPOCRATES  1315w
INTEGERS  88ne
IRRATIONAL  41e
ISAACNEWTON  513e
RATIONAL  61e